GB782981A - Improved method for producing corrosion-resistant coatings on molybdenum bodies and coated bodies so produced - Google Patents
Improved method for producing corrosion-resistant coatings on molybdenum bodies and coated bodies so producedInfo
- Publication number
- GB782981A GB782981A GB1396554A GB1396554A GB782981A GB 782981 A GB782981 A GB 782981A GB 1396554 A GB1396554 A GB 1396554A GB 1396554 A GB1396554 A GB 1396554A GB 782981 A GB782981 A GB 782981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbide
- group
- former
- diffusion
- bodies
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000576 coating method Methods 0.000 title abstract 3
- 229910052750 molybdenum Inorganic materials 0.000 title abstract 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title 1
- 238000005260 corrosion Methods 0.000 title 1
- 230000007797 corrosion Effects 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000011733 molybdenum Substances 0.000 title 1
- 239000010410 layer Substances 0.000 abstract 8
- 229910052742 iron Inorganic materials 0.000 abstract 5
- 229910052751 metal Inorganic materials 0.000 abstract 5
- 239000002184 metal Substances 0.000 abstract 5
- 230000004888 barrier function Effects 0.000 abstract 4
- 238000009792 diffusion process Methods 0.000 abstract 4
- 229910052580 B4C Inorganic materials 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 abstract 3
- 238000000354 decomposition reaction Methods 0.000 abstract 3
- 150000004820 halides Chemical class 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 229910052759 nickel Inorganic materials 0.000 abstract 3
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000005255 carburizing Methods 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 2
- 239000002344 surface layer Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910001182 Mo alloy Inorganic materials 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000004663 powder metallurgy Methods 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
782,981. Coating with metals; powder metallurgy. SINTERCAST CORPORATION OF AMERICA. May 12, 1954, No. 13965/54. Classes 82(1) and 82(2) [Also in Group XXII] A method of producing a protectivesurfaced Mo body comprises coating the body with at least one intermediate diffusion barrier layer comprising either an intermetallic-compound-former selected from the group consisting of Fe, Ni, Co, and alloys thereof, or a complexcompound-former selected from the group consisting of C, B, Al, Si, boron carbide,. silicon carbide, and mixtures (or alloys) thereof, merging with said body the barrier layer adjacent the surface thereof by heating in a non-oxidizing atmosphere at an elevated temperature then surfacing the coated body with a layer of a metal selected from the group consisting of Cr, Si, Al, Zr, and alloys thereof, and bonding the surface layer to the barrier layer adjacent to it by a diffusion heat treatment, at least one of the barrier layers serving to prevent diffusion of the Mo into the surface metal and diffusion of the surface metal into the Mo body. The intermetallic-compound-former (which may also be applied as a Fe-Ni-Co-Mo alloy) may be deposited by carbonyl decomposition, spraying, or electrolytically. The complex-compound-former (a) may be carbon and applied by carburizing the Mo body or carburizing a previously applied layer of Fe, Ni or Co (layers of Fe, Ni or Co can thus be alternated with layers of these metals in the carburized state), (b) may be silicon carbide or boron carbide and applied either as shown in Fig. 3, where a Mo sheet 19 is fed past a hopper 20 containing the carbide grains, or a mixture of carbide grains and Fe or Mo powder, through a furnace 21, the temperature of the sheet thus being raised to 1290‹-1830‹F., and is then passed between carbide rolls 22; or by heating the Mo body to 1290‹-1830‹F. and then spraying it with silicon carbide or boron carbide particles with or without an Fe or Mo powder admixture, or (c) may be applied by dipping, halide decomposition packimpregnation (in which the body is placed in a pack composed of the pulverized material and a halide gas is passed through the pack at high temperature), or electrolysis. The surface layer may be applied by vapour deposition or halide decomposition, and then oxidized by treatment in an oxidizing atmosphere. Buckets, blades, valves and nozzles of gas and steam turbines are referred to as being composed of the surfaced Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1396554A GB782981A (en) | 1954-05-12 | 1954-05-12 | Improved method for producing corrosion-resistant coatings on molybdenum bodies and coated bodies so produced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1396554A GB782981A (en) | 1954-05-12 | 1954-05-12 | Improved method for producing corrosion-resistant coatings on molybdenum bodies and coated bodies so produced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB782981A true GB782981A (en) | 1957-09-18 |
Family
ID=10032586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1396554A Expired GB782981A (en) | 1954-05-12 | 1954-05-12 | Improved method for producing corrosion-resistant coatings on molybdenum bodies and coated bodies so produced |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB782981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116024475A (en) * | 2022-10-25 | 2023-04-28 | 北京酷捷科技有限公司 | Chromium-molybdenum soaking plate and preparation method and application thereof |
-
1954
- 1954-05-12 GB GB1396554A patent/GB782981A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116024475A (en) * | 2022-10-25 | 2023-04-28 | 北京酷捷科技有限公司 | Chromium-molybdenum soaking plate and preparation method and application thereof |
| CN116024475B (en) * | 2022-10-25 | 2024-03-22 | 北京酷捷科技有限公司 | Chromium-molybdenum soaking plate and preparation method and application thereof |
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